US9558906B2 - Electrical switch - Google Patents

Electrical switch Download PDF

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Publication number
US9558906B2
US9558906B2 US13/706,393 US201213706393A US9558906B2 US 9558906 B2 US9558906 B2 US 9558906B2 US 201213706393 A US201213706393 A US 201213706393A US 9558906 B2 US9558906 B2 US 9558906B2
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United States
Prior art keywords
shaft
switch
overcurrent
event
tripping device
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US13/706,393
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US20130187746A1 (en
Inventor
Zbynek Augusta
Filip Musil
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Siemens AG
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Siemens AG
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Publication date
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Assigned to OEZ S.R.O. reassignment OEZ S.R.O. ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: AUGUSTA, ZBYNEK, MUSIL, FILIP
Assigned to SIEMENS AKTIENGESELLSCHAFT reassignment SIEMENS AKTIENGESELLSCHAFT ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: OEZ S.R.O.
Publication of US20130187746A1 publication Critical patent/US20130187746A1/en
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    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H89/00—Combinations of two or more different basic types of electric switches, relays, selectors and emergency protective devices, not covered by any single one of the other main groups of this subclass
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H71/00—Details of the protective switches or relays covered by groups H01H73/00 - H01H83/00
    • H01H71/04—Means for indicating condition of the switching device
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H71/00—Details of the protective switches or relays covered by groups H01H73/00 - H01H83/00
    • H01H71/10—Operating or release mechanisms
    • H01H71/12—Automatic release mechanisms with or without manual release
    • H01H71/40—Combined electrothermal and electromagnetic mechanisms
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H9/00—Details of switching devices, not covered by groups H01H1/00 - H01H7/00
    • H01H2009/0088—Details of rotatable shafts common to more than one pole or switch unit
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H71/00—Details of the protective switches or relays covered by groups H01H73/00 - H01H83/00
    • H01H71/04—Means for indicating condition of the switching device
    • H01H2071/042—Means for indicating condition of the switching device with different indications for different conditions, e.g. contact position, overload, short circuit or earth leakage
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H71/00—Details of the protective switches or relays covered by groups H01H73/00 - H01H83/00
    • H01H71/10—Operating or release mechanisms
    • H01H71/12—Automatic release mechanisms with or without manual release
    • H01H71/24—Electromagnetic mechanisms
    • H01H71/2472—Electromagnetic mechanisms with rotatable armatures

Definitions

  • At least one embodiment of the invention generally relates to an electrical switch.
  • a switch is marketed by Siemens AG, for example under the product name 3VL TMTU.
  • This switch involves a circuit breaker switch equipped with an overcurrent tripping device. In the event of an overcurrent situation the overcurrent tripping device can switch off the flow of current through the switch.
  • the switch known from the prior art is equipped with a thermal tripping device, which switches off the flow of current through the switch in the event of a thermal overload.
  • At least one embodiment of the invention is directed to an electrical switch which—by comparison with previous switches—reduces the dangers of the switch being operated incorrectly.
  • At least one embodiment of the invention makes provision for the overcurrent tripping device to have a first shaft which is disposed such that, in the event of an overcurrent situation, it is rotated from a first position into a second position and thereby indicates the overcurrent situation, and for the thermal tripping device to have a second shaft which is disposed such that, in the event of a thermal overload, it is rotated and also, in the event of the first shaft being rotated, it is rotated along with said shaft and initiates a switching off of the switch as it rotates.
  • FIG. 1 shows elements of a first example embodiment for an inventive switch in a three-dimensional view obliquely from the side
  • FIG. 2 shows the parts in accordance with FIG. 1 in cross-section
  • FIG. 3 shows elements of a second example embodiment for an inventive switch in a three-dimensional view from the side.
  • spatially relative terms such as “beneath”, “below”, “lower”, “above”, “upper”, and the like, may be used herein for ease of description to describe one element or feature's relationship to another element(s) or feature(s) as illustrated in the figures. It will be understood that the spatially relative terms are intended to encompass different orientations of the device in use or operation in addition to the orientation depicted in the figures. For example, if the device in the figures is turned over, elements described as “below” or “beneath” other elements or features would then be oriented “above” the other elements or features. Thus, term such as “below” can encompass both an orientation of above and below. The device may be otherwise oriented (rotated 90 degrees or at other orientations) and the spatially relative descriptors used herein are interpreted accordingly.
  • first, second, etc. may be used herein to describe various elements, components, regions, layers and/or sections, it should be understood that these elements, components, regions, layers and/or sections should not be limited by these terms. These terms are used only to distinguish one element, component, region, layer, or section from another region, layer, or section. Thus, a first element, component, region, layer, or section discussed below could be termed a second element, component, region, layer, or section without departing from the teachings of the present invention.
  • At least one embodiment of the invention makes provision for the overcurrent tripping device to have a first shaft which is disposed such that, in the event of an overcurrent situation, it is rotated from a first position into a second position and thereby indicates the overcurrent situation, and for the thermal tripping device to have a second shaft which is disposed such that, in the event of a thermal overload, it is rotated and also, in the event of the first shaft being rotated, it is rotated along with said shaft and initiates a switching off of the switch as it rotates.
  • a significant advantage of at least one embodiment of the inventive electrical switch lies in the fact that it can be seen on the basis of the position of the first shaft and of the second shaft whether the tripping was solely caused by the thermal tripping device or has been caused by the action of the overcurrent tripping device as well. If namely both the first shaft and also the second shaft are rotated in relation to a predetermined basic position—for a switched-on switch—, the tripping is to be attributed to the overcurrent tripping device, because the first shaft, in the event of the device tripping, also rotates the second shaft. Since it can thus be seen on the basis of the position of the first and second shaft whether or not the overcurrent tripping device has tripped, an inadvertent or unwanted switching back on of the switch in the event of a short-circuit can be avoided.
  • first shaft and the second shaft are disposed coaxially and to be supported by individually assigned or separate bearings.
  • the bearings of the first shaft are preferably separate from the bearings of the second shaft.
  • the second shaft is disposed within the first shaft.
  • the second shaft In order to be able to distinguish particularly securely between thermal tripping and tripping as a result of an overcurrent it is seen as advantageous for the second shaft to be embodied such that it is rotated in the event of a thermal overload without rotating the first shaft or causing said shaft to rotate along with it.
  • thermo tripping device In respect of the layout of the thermal tripping device, it is viewed as advantageous for this to have a bimetal element which deforms when heated up and initiates or causes a rotation of the second shaft.
  • thermal tripping device in relation to this device it is seen as advantageous for the overcurrent tripping device, especially its first shaft, to hold the second shaft in the position which the second shaft has reached by rotating along with the first shaft.
  • the electrical switch can for example involve a multiphase electrical switch.
  • a multiphase electrical switch it is seen as advantageous if the first switch has a phase-individual switching lug for each electrical phase to be switched.
  • the overcurrent tripping device preferably has a tripping element in each case which interacts with the respectively assigned phase-individual switching lug on the first shaft and, in the event of an overcurrent situation, pivots the switching lug or enables the switching lug to pivot.
  • a lever In order to make tripping of the switch caused by an overcurrent especially easy to recognize, it is seen as advantageous for a lever to be disposed on the first shaft which, when the first shaft rotates from the first position into the second position, is pivoted into a “tripped” position, in which it indicates the overcurrent situation that has occurred, i.e. a short-circuit for example.
  • FIG. 1 shows components of a three-phase electrical switch 10 .
  • An overcurrent tripping device 20 which has a first shaft 30 as well as for each electrical phase to be switched by the three-phase switch 10 , has a phase-individual tripping element, is shown.
  • the phase-individual tripping elements are indicated in FIG. 1 by the reference characters 40 , 41 and 42 .
  • the tripping elements 40 , 41 and 42 each have the spring force of a phase-individual spring applied to them; the springs are identified in FIG. 1 with the reference characters 50 , 51 and 52 .
  • the tripping elements 40 , 41 and 42 affected in each case by the overcurrent situation are pivoted in each case against the spring force of the assigned springs 50 , 51 and 52 , which rotates the first shaft 30 and trips the overcurrent tripping device 20 .
  • the tripping elements 40 , 41 and 42 are each formed by a hinged armature which, in the event of an overcurrent situation, is pivoted out and during the pivoting rotates the first shaft 30 .
  • the three-phase switch 10 in accordance with FIG. 1 is additionally equipped with a thermal tripping device 60 which comprises a second shaft 70 as well as a bimetal element 80 in each case for each electrical phase of the switch 10 to be switched and also an attachment piece 90 connected to the respective bimetal element 80 .
  • a thermal tripping device 60 which comprises a second shaft 70 as well as a bimetal element 80 in each case for each electrical phase of the switch 10 to be switched and also an attachment piece 90 connected to the respective bimetal element 80 .
  • the bimetal elements 80 involved act on the second shaft 70 and pivot the latter, which causes the electrical switch 10 to be switched off.
  • the second shaft 70 of the thermal tripping device 60 is supported coaxially to the first shaft 30 of the thermal tripping device 20 .
  • the arrangement of the two shafts 30 and 70 in this case is selected such that the second shaft 70 is located within the first shaft 30 .
  • the two shafts 30 and 70 are supported independently of one another so that said shafts can at least also be rotated independently of one another or relative to one another.
  • the first shaft 30 and the second shaft 70 preferably work together as follows:
  • the tripping element 40 , 41 or 42 of the electrical phase affected by the overcurrent is pivoted, which results in the first shaft 30 being rotated.
  • the first shaft 30 and the second shaft 70 in this case are coupled to one another such that, in the event of the first shaft 30 being rotated the second shaft 70 is also rotated.
  • the rotation of the second shaft 70 or the rotation of the second shaft 70 along with the first shaft subsequently leads to a tripping or switching off of the electrical switch 10 .
  • the tripping of the switch 10 must be attributable to a thermal overload; this is because, in the event of a thermal overload, only the second shaft 70 of the thermal tripping device 60 is rotated and the switch 10 tripped thereby, whereas the position of the first shaft 30 remains unchanged.
  • the associated rotation of the second shaft 70 by the first shaft 30 can be effected for example by one or more stop elements which strike one another during a relative rotation of the two shafts and rotate the second shaft 70 as well.
  • the switch 10 has a mechanism, not shown in any greater detail in FIG. 1 , which makes it possible to switch the switch 10 back on again once it has tripped only after the first shaft 30 has been reset into its original position or its basic setting.
  • FIG. 2 shows the switch 10 according to FIG. 1 in cross section.
  • the second shaft 70 , one of the bimetal elements 80 and also one of the attachment pieces 90 of the thermal tripping device 60 can be seen in the figure.
  • the first shaft 30 as well as one of the tripping elements 40 of the overcurrent tripping device 20 can be seen.
  • FIG. 3 shows a second exemplary embodiment for an inventive three-phase switch 10 .
  • a switching lug is provided on the first shaft 30 of the overcurrent tripping device 20 for each electrical phase to be switched; the switching lugs are identified by the reference characters 100 , 101 and 102 .
  • the switching lug 100 acts together with the tripping element 40 and is pivoted by the latter when the tripping element 40 is pivoted against the spring force of the spring 50 in the direction of the switching lug 100 .
  • An indicator lever 110 which shows the position of the first shaft 30 , is connected to the first shaft 30 of the overcurrent tripping device 20 .
  • the second shaft 70 of the thermal tripping device 60 can also be seen in FIG. 3 .
  • the further shaft 30 and also the second shaft 70 are also disposed coaxially to one another in the example embodiment depicted in FIG. 3 and are held by individually-assigned bearings which are not shown in detail in FIG. 3 for reasons of clarity.
  • the switch 10 trips it can be seen from the position of the indicator lever 110 whether the switch has tripped as a result of a thermal overload or as result of an overcurrent: if the indicator lever 110 namely assumes the position shown in FIG. 3 , the switching-off of the switch 10 has occurred as a result of a thermal tripping of the thermal tripping device 60 or by only the shaft 70 rotating. If on the other hand the indicator lever 110 is pivoted relative to the position shown in FIG. 3 , because one of the tripping elements, for example the tripping element 40 in accordance with FIG. 3 , has pivoted the switching lug 100 and thereby the first shaft 30 , the tripping of the switch will be attributable to an overcurrent situation, for example a short-circuit.
  • an overcurrent situation for example a short-circuit.
  • any one of the above-described and other example features of the present invention may be embodied in the form of an apparatus, method, system, computer program, tangible computer readable medium and tangible computer program product.
  • any one of the above-described and other example features of the present invention may be embodied in the form of an apparatus, method, system, computer program, tangible computer readable medium and tangible computer program product.
  • of the aforementioned methods may be embodied in the form of a system or device, including, but not limited to, any of the structure for performing the methodology illustrated in the drawings.

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  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Breakers (AREA)
  • Emergency Protection Circuit Devices (AREA)
  • Thermally Actuated Switches (AREA)
US13/706,393 2012-01-23 2012-12-06 Electrical switch Active 2034-10-30 US9558906B2 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE102012200922A DE102012200922A1 (de) 2012-01-23 2012-01-23 Elektrischer Schalter
DE102012200922 2012-01-23
DE102012200922.1 2012-01-23

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US20130187746A1 US20130187746A1 (en) 2013-07-25
US9558906B2 true US9558906B2 (en) 2017-01-31

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Application Number Title Priority Date Filing Date
US13/706,393 Active 2034-10-30 US9558906B2 (en) 2012-01-23 2012-12-06 Electrical switch

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US (1) US9558906B2 (de)
EP (1) EP2618357B1 (de)
CN (1) CN103219205B (de)
DE (1) DE102012200922A1 (de)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20220384134A1 (en) * 2019-11-12 2022-12-01 Ls Electric Co., Ltd. Trip device

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103594298B (zh) * 2013-11-22 2016-04-06 王克诚 电控塑壳断路器及逻辑互锁式塑壳断路器
KR101529590B1 (ko) * 2013-12-19 2015-06-29 엘에스산전 주식회사 배선용 차단기의 순시트립장치
DE102014203161B4 (de) 2014-02-21 2021-12-02 Siemens Aktiengesellschaft Magnetische Auslösevorrichtung und Überstromauslösevorrichtung eines elektrischen Schalters sowie elektrischer Schalter und Verfahren zur Kalibrierung der magnetischen Auslösung einer magnetischen Auslösevorrichtung
DE102014203661B4 (de) * 2014-02-28 2021-02-04 Siemens Aktiengesellschaft Knopfelement und Schieberelement einer Verstellvorrichtung sowie Vorstellvorrichtung und Verfahren zum Verstellen einer Position einer thermischen Auslösewelle
CN106797115B (zh) 2014-10-01 2019-06-04 开利公司 压缩机电动机过载检测
KR101708545B1 (ko) * 2015-01-05 2017-02-21 엘에스산전 주식회사 배선용 차단기의 순시트립장치

Citations (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4342974A (en) * 1980-12-09 1982-08-03 Matsushita Electric Works, Ltd. Multipolar type circuit breaker
EP0721647A1 (de) 1993-09-30 1996-07-17 Siemens Ag Einrichtung zur steuerung der einschaltung eines leistungsschalters
US5831499A (en) * 1996-12-13 1998-11-03 Schneider Electric Sa Selective trip unit for a multipole circuit breaker
DE19819242A1 (de) 1998-04-29 1999-11-11 Aeg Niederspannungstech Gmbh Thermomagnetischer Leistungsschalter
US6100777A (en) * 1999-08-18 2000-08-08 Eaton Corporation Multi-pole circuit breaker with multiple trip bars
US6222433B1 (en) * 2000-02-10 2001-04-24 General Electric Company Circuit breaker thermal magnetic trip unit
CN1399785A (zh) 1999-11-24 2003-02-26 西门子公司 控制断路器接通的装置
US20040251994A1 (en) * 2003-03-13 2004-12-16 General Electric Company Method and apparatus for magnetically tripping circuit breakers
US7323956B1 (en) * 2005-07-29 2008-01-29 Eaton Corporation Electrical switching apparatus and trip unit including one or more fuses
US20090195346A1 (en) * 2006-06-14 2009-08-06 Moeller Gmbh Thermal and/or magnetic overload trip
DE102008008032A1 (de) 2008-02-06 2009-08-13 Siemens Aktiengesellschaft Auslöseeinheit für einen elektrischen Schalter
US20090295532A1 (en) * 2008-05-30 2009-12-03 Puhalla Craig J Electrical switching apparatus and heater assembly therefor
US20110073451A1 (en) * 2009-09-28 2011-03-31 Gottschalk Andrew L Electrical switching apparatus and shaft assembly therefor

Patent Citations (17)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4342974A (en) * 1980-12-09 1982-08-03 Matsushita Electric Works, Ltd. Multipolar type circuit breaker
EP0721647A1 (de) 1993-09-30 1996-07-17 Siemens Ag Einrichtung zur steuerung der einschaltung eines leistungsschalters
US5661627A (en) 1993-09-30 1997-08-26 Siemens Aktiengesellschaft Arrangement for controlling the switching of a power circuit breaker
US5831499A (en) * 1996-12-13 1998-11-03 Schneider Electric Sa Selective trip unit for a multipole circuit breaker
US6225881B1 (en) 1998-04-29 2001-05-01 General Electric Company Thermal magnetic circuit breaker
CN1236178A (zh) 1998-04-29 1999-11-24 Aeg低压技术股份有限两合公司 热磁电路断路器
DE19819242A1 (de) 1998-04-29 1999-11-11 Aeg Niederspannungstech Gmbh Thermomagnetischer Leistungsschalter
US6100777A (en) * 1999-08-18 2000-08-08 Eaton Corporation Multi-pole circuit breaker with multiple trip bars
CN1399785A (zh) 1999-11-24 2003-02-26 西门子公司 控制断路器接通的装置
US6788172B1 (en) 1999-11-24 2004-09-07 Siemens Aktiengesellschaft Device for controlling the closing of a power circuit breaker
US6222433B1 (en) * 2000-02-10 2001-04-24 General Electric Company Circuit breaker thermal magnetic trip unit
US20040251994A1 (en) * 2003-03-13 2004-12-16 General Electric Company Method and apparatus for magnetically tripping circuit breakers
US7323956B1 (en) * 2005-07-29 2008-01-29 Eaton Corporation Electrical switching apparatus and trip unit including one or more fuses
US20090195346A1 (en) * 2006-06-14 2009-08-06 Moeller Gmbh Thermal and/or magnetic overload trip
DE102008008032A1 (de) 2008-02-06 2009-08-13 Siemens Aktiengesellschaft Auslöseeinheit für einen elektrischen Schalter
US20090295532A1 (en) * 2008-05-30 2009-12-03 Puhalla Craig J Electrical switching apparatus and heater assembly therefor
US20110073451A1 (en) * 2009-09-28 2011-03-31 Gottschalk Andrew L Electrical switching apparatus and shaft assembly therefor

Non-Patent Citations (2)

* Cited by examiner, † Cited by third party
Title
Godesa, EPO Machine Translation of DE 102008008032 A1. *
Office Action for Chinese Patent Application No. 201310024259.5 dated Aug. 5, 2015 with English translation.

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20220384134A1 (en) * 2019-11-12 2022-12-01 Ls Electric Co., Ltd. Trip device

Also Published As

Publication number Publication date
CN103219205A (zh) 2013-07-24
EP2618357A3 (de) 2014-10-08
US20130187746A1 (en) 2013-07-25
EP2618357B1 (de) 2016-01-06
DE102012200922A1 (de) 2013-07-25
EP2618357A2 (de) 2013-07-24
CN103219205B (zh) 2017-05-10

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